Whole house generator installers in Mississippi
Power, cost, permits & sizing ↓Mississippi
58 Mississippi companies install and service home standby generators, including 13 generator specialists and factory-authorized dealers. Company and brand details come from each company's own website — for warranty work, confirm current dealer status with the manufacturer directly.
58 companies
Electrical contractors that install generators (21)
AG Electric, LLC Electrical contractor
Apex Electric, LLC Electrical contractor
Chavis Electrical Services LLC Electrical contractor
Custom Electrical Solutions Electrical contractor
Echols Electrical & Services LLC Electrical contractor
Enroth Electric Electrical contractor
Guerry Electrical Contractors, LLC Electrical contractor
Guice Electric LLC Electrical contractor
H & H Electric Co. LLC Electrical contractor
Hester's Electrical Service Electrical contractor
Lamey Electric Inc Electrical contractor
Lincoln Electric Supply Company Electrical contractor
Livewire Electrical Solutions, LLC Electrical contractor
Mississippi Energy Services Electrical contractor
R S Electric Services, Inc. Electrical contractor
RC Electric, LLC Electrical contractor
Rinewalt Electric LLC Electrical contractor
Robinson Electric Electrical contractor
Rod's Electrical Services Electrical contractor
Sandoval Electric Electrical contractor
Whirlwind Electric, LLC Electrical contractor
HVAC & plumbing contractors that install generators (24)
Adept Contracting HVAC / plumbing contractor
AirSouth Cooling and Heating HVAC / plumbing contractor
American Air Specialists of Mississippi Inc HVAC / plumbing contractor
Ball Heating, Cooling, Plumbing & Electrical HVAC / plumbing contractor
Bowman Heating and Air Conditioning HVAC / plumbing contractor
Channell Heating & Cooling HVAC / plumbing contractor
Comfort Zone Heating & Cooling Services LLC HVAC / plumbing contractor
Dent Air Conditioning & Plumbing HVAC / plumbing contractor
Desoto Air & Plumbing LLC HVAC / plumbing contractor
Environment Masters HVAC / plumbing contractor
Grant A/C & Heating HVAC / plumbing contractor
Happy Pipes Plumbing HVAC / plumbing contractor
Heblon Heating & Air Conditioning HVAC / plumbing contractor
M & M Heating and Cooling HVAC / plumbing contractor
Mike's Heating & AC HVAC / plumbing contractor
Natchez Heating & Cooling HVAC / plumbing contractor
Parker Electric Heat and Air HVAC / plumbing contractor
Rescue Heating and Air HVAC / plumbing contractor
Simpson Air Conditioning, Plumbing & Electrical HVAC / plumbing contractor
Southern Air HVAC / plumbing contractor
Specialty Heating, Cooling & Plumbing HVAC / plumbing contractor
The Service Company (TSC Service Company) HVAC / plumbing contractor
Thomas HVAC Services HVAC / plumbing contractor
Tri-County Air Service HVAC / plumbing contractor
Power in Mississippi
Mississippi sits in the crosshairs of the two worst kinds of outage. On the Gulf Coast it's hurricanes: when Katrina came ashore in August 2005, its 28-foot surge and 140 mph winds knocked out every one of Mississippi Power's 195,000 customers at once, and it took twelve days to put the last of them back. Inland it's tornadoes — the EF4 that tore through Rolling Fork and Silver City in March 2023 killed seventeen people and shredded the grid across the Delta — plus the ice storms that periodically glaze the northern counties. Recovery here is slow because so much of the state is rural cooperative territory where a single downed line can leave a county dark for days. A whole-home standby generator starts on its own within seconds and keeps the AC, well pump, refrigerator, and medical equipment running on natural gas or propane until the utility catches up.
Generator permits & codes in Mississippi
- Who issues permits
- Your city or county building department issues the permit and inspects the work. Mississippi does not enforce one uniform residential building or electrical code statewide — under Miss. Code Title 17, Chapter 2 code adoption is largely a local option, so the exact permit and inspection process varies by jurisdiction (the State Fire Marshal's Office adopted the 2024 International Fire and Building Codes for its purposes effective July 1, 2024). The work is contractor-licensed by the Mississippi State Board of Contractors (a Residential Builder/Remodeler license, or a Certificate of Responsibility for larger commercial jobs); Mississippi issues no statewide electrician license, so any electrician licensing is a local matter.
- Timeline
- Varies widely by jurisdiction. In the metros expect an electrical permit — plus a mechanical/gas permit where a gas line is run — issued over the counter or online, with an inspection once the work is complete; in some unincorporated areas there is little formal process. Confirm what your city or county requires before the work starts.
- Code in force
- Mississippi has no single statewide residential electrical code; the National Electrical Code edition in force is whatever your local jurisdiction has adopted, and it can differ from one county to the next. Confirm the current NEC edition and permit requirements with your local building department before the install.
- Major utilities
- Entergy Mississippi serves the central part of the state, the Delta, and the Jackson metro — about 461,000 customers across 45 counties; Mississippi Power, a Southern Company utility, serves the 23 southeastern counties including the Gulf Coast (Hattiesburg, Gulfport, Biloxi, Pascagoula); the northeast around Tupelo is served by local distributors of Tennessee Valley Authority power. On top of that, Mississippi has one of the largest rural electric-cooperative footprints in the country — 26 cooperatives covering the majority of the state's land area. Entergy tells customers a standby generator must be installed by a licensed electrician with a transfer switch that isolates it from the utility's lines, so it can never backfeed and endanger crews.
- Worth knowing
- Two things shape a Mississippi install. First, code: with no uniform statewide residential code, whether you need a permit — and which NEC edition applies — genuinely depends on your city or county, so a job that's heavily inspected in Jackson may be light-touch a county over. Second, geography: cooperatives and their long rural lines cover most of the state, which is exactly why outages here can run for days and why standby power is a resilience purchase, not a convenience.
Common questions about whole house generators in Mississippi
How much does a standby generator cost installed in Mississippi?
For a typical Mississippi home, budget roughly $9,000–$15,000 all-in
for a whole-house air-cooled standby unit (about 18–26 kW): the
generator, the automatic transfer switch, a pad, the fuel hookup, the
electrical work, and any permit. A smaller essentials-only unit
(10–14 kW) runs about $6,000–$9,000, and liquid-cooled units for
large homes climb past $20,000. Fuel is the swing factor: Jackson, the
Gulf Coast cities, and the larger towns generally have natural-gas
service, but much of the rural Delta, Pine Belt, and cooperative
territory has no gas main, so those installs run on a propane tank that
adds to the up-front cost.
Do I need a permit to install a generator in Mississippi?
Usually yes, but it depends on where you live. Mississippi has no
single uniform residential building code enforced statewide — permitting
and inspection are handled by your city or county, and requirements vary
from a full electrical-and-gas permit in the metros to little formal
process in unincorporated areas. The work itself is contractor-licensed
work: the installer should hold the appropriate Mississippi State Board
of Contractors license, and because the state doesn't issue a statewide
electrician's license, any electrician licensing is handled locally. A
reputable installer knows your jurisdiction's rules, pulls whatever
permit applies, and schedules the inspection — treat an offer to skip a
required permit as a red flag.
What size generator do I need in Mississippi?
That comes down to a load calculation any good installer runs during
the site visit, and three loads tend to drive it here. Summer air
conditioning is nearly continuous in the Gulf Coast and Delta heat and
humidity, and the compressor's start-up surge sets a floor on capacity.
Homes in the northern counties often heat with a heat pump backed by
electric-resistance strips that pull hard on a cold night. And rural
homes on a private well — common across the Delta and the Pine Belt —
lose their water the moment the power quits. Essentials only fits in
10–14 kW; a typical whole house lands at 18–26 kW; a soft-start
on the AC can keep the unit, and the price, smaller.
Generac, Kohler, Cummins, or Briggs & Stratton — does the brand matter?
All four make reliable home standby units; the installer and the
service relationship afterward matter more than the badge. Generac has
the largest dealer network in Mississippi, so parts and warranty techs
are easy to find from the Coast up through Jackson to the northern
counties; Kohler and Cummins have strong dealers in the larger metros. A
factory-authorized dealer can perform warranty service on its own brand,
which is worth weighing when two brands otherwise look alike. Use the
brand pages here to see who installs and services each one near you.
How long does installation take?
The on-site work is usually one to two days once the unit is in hand:
set the pad, run the gas and electrical, mount the transfer switch, and
commission it. The calendar time is longer — a site visit and quote,
then any permitting, then the inspection. After a hurricane or a major
tornado those steps stretch, because every house in the county wants a
generator and an installer at the same moment. Ordering ahead of
hurricane season, rather than the week after a storm, is how you avoid
competing for both the unit and the crew.
What maintenance does a standby generator need?
An annual service — oil and filter, spark plugs on schedule, a battery
check, and a load test — on top of the weekly self-test the unit runs on
its own. Mississippi's long, humid summers are hard on the battery and
enclosure, and a Gulf Coast install near salt water wants a regular
corrosion check. The point is to prove the unit works before the season
it's needed, not during it. Many installers listed here offer
maintenance plans, and several service brands they don't sell. Neglected
maintenance is the most common reason a generator fails to start when the
grid finally goes down.